Thursday, January23, 2020
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Marine Weather and Tides
Wailua, HI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:10AMSunset 6:17PM Thursday January 23, 2020 12:51 AM HST (10:51 UTC) Moonrise 6:29AMMoonset 5:33PM Illumination 3% Phase: Waning Crescent; Moon at 28 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PHZ113 Kauai Channel- 937 Pm Hst Wed Jan 22 2020
.small craft advisory in effect through Thursday afternoon...
Rest of tonight..Winds variable less than 10 knots. Wind waves 3 feet. Northwest swell 14 feet.
Thursday..South winds 10 knots. Wind waves 3 feet. Northwest swell 13 feet decreasing to 11 feet in the afternoon.
Thursday night..Southwest winds 10 knots. Wind waves 3 feet. Northwest swell 8 feet.
Friday..Winds variable less than 10 knots becoming north 15 knots in the afternoon. Wind waves 3 feet. Northwest swell 8 feet.
Friday night..Northeast winds 15 knots. Wind waves 4 feet. Northwest swell 11 feet increasing to 13 feet after midnight. Isolated showers.
Saturday..East winds 15 knots. Wind waves 4 feet. Northwest swell 13 feet. Isolated showers through the day.
Saturday night..East winds 15 knots. Wind waves 4 feet. Northwest swell 13 feet. Isolated showers.
Sunday..East winds 10 knots. Wind waves 4 feet. Northwest swell 10 to 12 feet. Isolated showers.
Monday..East winds 10 knots. Wind waves 4 feet. Northwest swell 7 to 9 feet.
PHZ100 937 Pm Hst Wed Jan 22 2020
Synopsis for hawaiian coastal waters.. A surface ridge will be near the islands through Friday. High pressure will build north of the islands Friday through Saturday behind a passing front.


7 Day Forecast for Marine Location Near Wailua, HI
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location: 22, -159     debug


Area Discussion for -
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FXHW60 PHFO 230645 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 845 PM HST Wed Jan 22 2020

SYNOPSIS. Variable winds in a stable land and sea breeze weather pattern will continue over most of the islands through Friday afternoon. Expect low clouds developing with isolated light interior showers possible each afternoon followed by overnight clearing across most islands. One exception will occur over the southeast slopes of the Big Island where a slight increase in clouds and showers remains in the forecast through Friday. A weak front stalling near Kauai on Friday afternoon will increase clouds and showers over the Garden Isle through Saturday. Moderate trade winds will return from Friday afternoon through the weekend along with slight increases to windward and mountain showers. Winds will decrease and veer southeasterly in a dry land and sea breeze pattern for the first half of next week.

DISCUSSION. The weather picture this evening shows the Hawaiian Islands under the southwestern edge of the subtropical ridge with frontal boundary north of the islands heading east, and another cold front approaching the state from the northwest direction. Dry and stable weather conditions under the ridge are forecast with variable winds allowing local scale land and sea breezes to develop over most islands through Friday. Dry moisture levels in the atmosphere will produce cooler than normal low temperatures each night.

Friday through Sunday, the weather pattern changes a bit as a weakening cold front moves into Kauai and Niihau. This front will reach Kauai by Friday afternoon just as the forward motion along the frontal band stalls out. Expect increasing clouds and showers for both islands from Friday into Saturday. Trade winds will bleed out ahead of the stalling frontal band with trades slowly spreading eastward to all islands through Saturday morning. Clouds and isolated to scattered showers over windward and mauka areas will also return with these moderate trades lasting through the weekend. East to southeast trade winds on Sunday will push the clouds and showers along the frontal boundary towards the northwest away from Kauai County with improving weather conditions in the forecast from Saturday night onward.

Monday through Wednesday, trade winds will veer towards the southeast direction with a subtropical ridge axis anchored roughly 400 miles north of the island chain. Light southeasterly winds will allow a return to land and sea breezes over the islands with a slight increase to clouds and showers along the southeastern slopes of the Big Island. This drier weather pattern will bring sunny skies back to the islands through the middle of next week. Additional high clouds moving into the region next week will improve sunrise and sunset colors from Wednesday onward.

AVIATION. A high pressure ridge will remain over the state for the next 24 hours and allow for a light and variable wind pattern. Relatively dry air in place should keep precipitation chances low. By Thursday afternoon, expect weak sea breeze development along coastal areas. Otherwise, light variable winds and dry conditions will prevail once again.

MARINE. Light and variable winds will continue through early Friday, then shift out of the north to northeast and increase into the moderate to fresh category late Friday as a front passes north of the area. Fresh to locally strong easterly trades are expected for a brief period over the weekend before trending back down by early next week as a series of fronts pass to the north. Although seas may briefly drop below the Small Craft Advisory (SCA) level (10 ft) Thursday night through Friday as the large northwest swell subsides, advisory- level conditions will return Friday night through the weekend due to a combination of winds and seas.

Surf along north and west facing shores will remain up through next week due a series of large northwest swells evolving from the progressive pattern over the northern Pacific. The current swell building down the island chain has peaked at the northwest offshore buoys (15 ft 17 sec) this afternoon, which will correspond to an overnight peak locally. Although a gradual downward trend will begin through the day Thursday, surf will hold above warning levels for exposed north and west facing shores. The downward trend will be short-lived due to another large northwest swell arriving Friday night into Saturday from a large area of gale- to storm-force winds that has setup within the 300-320 directional band relative to the islands over the northwest Pacific. Surf will respond and return warning levels Saturday through Sunday. As this swell eases into early next week, advisory-level surf may hold through late Monday. Another large northwest swell will be possible by next Wednesday as a gale develops over the far northwest Pacific this weekend.

Surf along exposed east facing shores will remain small through the period due to the lack of persistent trades locally and upstream across the eastern Pacific.

Surf along south facing shores will remain small through next week. A couple of background south swells expected over the weekend and next Tuesday should be enough to keep things from going flat.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Warning until 6 PM HST Thursday for Niihau-Kauai Windward-Kauai Leeward-Waianae Coast-Oahu North Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui Central Valley- Windward Haleakala-Kona-Kohala.

Small Craft Advisory until 6 PM HST Thursday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Big Island Windward Waters-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Bohlin AVIATION . JT MARINE . Gibbs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWWH1 - 1611400 - Nawiliwili, HI 19 mi58 min 65°F 79°F1017.8 hPa
51208 36 mi52 min 78°F12 ft
51201 - Waimea Bay, HI (106) 52 mi76 min 73°F11 ft

Wind History for Nawiliwili, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI19 mi59 minWSW 410.00 miA Few Clouds65°F60°F84%1017.6 hPa

Link to 5 minute data for PHLI

Wind History from HLI (wind in knots)
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Last 24hrW8W5W5W7W5W7W5W5W5CalmSE66S7SE9S9S7S7S5S5W5W5W6W5W4
1 day agoE14E11E11E10E83W4W6W6CalmE4E7E5E7E8SE8S6SE5CalmW4W6W5W7W8
2 days agoNE14NE14NE13NE12NE12NE11NE10NE13NE12NE10NE10NE11NE9NE9NE12NE9N7E11E12E12E14E12E13E13

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
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Hanamaulu Bay
Click for Map
Thu -- 03:18 AM HST     2.24 feet High Tide
Thu -- 06:30 AM HST     Moonrise
Thu -- 07:17 AM HST     Sunrise
Thu -- 10:35 AM HST     0.20 feet Low Tide
Thu -- 03:06 PM HST     0.57 feet High Tide
Thu -- 05:34 PM HST     Moonset
Thu -- 06:20 PM HST     Sunset
Thu -- 08:20 PM HST     -0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.72.12.22.221.61.10.70.40.20.20.30.40.50.60.50.40.20-0.1-0.10.10.5

Tide / Current Tables for Nawiliwili, Hawaii
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Nawiliwili
Click for Map
Thu -- 03:24 AM HST     2.20 feet High Tide
Thu -- 06:30 AM HST     Moonrise
Thu -- 07:17 AM HST     Sunrise
Thu -- 10:37 AM HST     0.35 feet Low Tide
Thu -- 02:48 PM HST     0.68 feet High Tide
Thu -- 05:34 PM HST     Moonset
Thu -- 06:20 PM HST     Sunset
Thu -- 08:20 PM HST     -0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.622.22.21.91.61.20.80.50.40.40.40.50.60.70.60.40.2-0.1-0.2-0.20.10.4

Weather Map
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wmap_P
GEOS Local Image of Hawaii    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (5,6,7,8)
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Ground Weather Radar Station Kauai, HI
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.